serial: qcom_geni: Disable closing_wait for console to prevent shutdown timeout

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During system power-off, systemd closes the console UART and blocks in
tty_wait_until_sent() waiting for pending TX completion before
uart_shutdown() can cancel pending TX operations. With the default
closing_wait of 30s, this causes a watchdog reset when systemd is
responsible for watchdog feeding.

Set closing_wait to ASYNC_CLOSING_WAIT_NONE in startup() for console
ports to bypass tty_wait_until_sent() on close, allowing uart_shutdown()
to cancel TX commands cleanly. This change doesn't impact regular ports
functionality.

Signed-off-by: Aniket Randive <aniket.randive@oss.qualcomm.com>
Link: https://patch.msgid.link/20260706093749.836121-1-aniket.randive@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Aniket Randive 2026-07-06 15:07:49 +05:30 • committed by Greg Kroah-Hartman

parent d0cd9c8d0f

commit acba38e675

1 changed files with 8 additions and 0 deletions

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drivers/tty/serial/qcom_geni_serial.c

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